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Finding the Fourth Proportional to 3,920,917,201.20, 5,503,059,032.40 and 3,920,917,201.20

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Solution

The fourth proportional to 3,920,917,201.20, 5,503,059,032.40 and 3,920,917,201.20 is: 5,503,059,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920,917,201.20 : 5,503,059,032.40 = 3,920,917,201.20 : x
  2. Step 2: Convert to fraction form
    3,920,917,201.20/5,503,059,032.40 = 3,920,917,201.20/x
  3. Step 3: Cross multiply
    3,920,917,201.20x = 5,503,059,032.40 × 3,920,917,201.20
  4. Step 4: Simplify right side
    3,920,917,201.20x = 21,577,038,819,356,184,576
  5. Step 5: Solve for x
    x = 21,577,038,819,356,184,576/3,920,917,201.20
  6. Step 6: Final answer
    x = 5,503,059,032.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.